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Home >> Smart >> 2018 >> Fortwo 2D Coupe >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Brakes - Hydraulic & Mechanical Systems - 453 Chassis >> Testing & Repair >> Remove/Install Electronic Stability Program (ESP®) Hydraulic Unit - AR42.45-P-0817SR

Remove/Install Electronic Stability Program (ESP®) Hydraulic Unit - AR42.45-P-0817SR

MODEL 453 

G12096936Courtesy of MERCEDES-BENZ USA
CAUTION Risk of poisoning  from swallowing brake fluid.
Risk of injury  from skin and eye contact with brake fluid
Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. AS42.50-Z-0001-01A 
  Notes on repairs to brake system   AH42.00-P-0003-01A 
  Brake fluid notes   AH42.50-P-0001-01A 
  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Switch off ignition    
2 Insert brake pedal jack with adapter for brake pedal jack between brake pedal and driver's seat, and press brake pedal approx. 2 cm NOTES
Cover driver seat.
Otherwise the driver's seat may be soiled or damaged.
 
SPECIAL TOOL Brake pedal jack Figure
SPECIAL TOOL Adapter for brake pedal winch Figure
3 Mark brake lines (2, 3) with corresponding connections    
4 Detach brake lines (2) from master brake cylinder leading to hydraulic unit (1)   AR42.10-P-0034SR 
5 Unscrew brake lines (3) from hydraulic unit (1) and seal INSTALLATION IMPORTANT : Observe marking of the brake lines (3).
TORQUE SPECIFICATION Retaining screw, brake line to hydraulic unit
*BA42.10-P-1004-04SR 
SPECIAL TOOL Record plug Figure
6 Release and disconnect electrical connection (4)    
7 Remove front axle   AR33.10-P-0100SR
8 Unclip brake lines (3) from brackets (5)    
9 Unclip electrical wiring harness (6) from bracket (7)    
10 Unscrew nuts (8) TORQUE SPECIFICATION Nut, hydraulic unit bracket to body *BA42.45-P-1001-01P 
11 Remove hydraulic unit (7) downwards with bracket(1) NOTES
Do not kink or bend brake lines (3).
Otherwise leaks can occur in the brake circuit.
 
12 Loosen nuts (9) and detach hydraulic unit (1) from bracket (7) TORQUE SPECIFICATION Nut, bracket to hydraulic unit *BA42.45-P-1002-01P 
13 lnstall in the reverse order    
14
REFER TO SELF-DIAGNOSTIC SYSTEMS
Perform calibration of ESP® control unit with diagnostic system When replacing hydraulic unit (1) or ESP® control unit. AD00.00-P-2000-06SR
BRAKE LINES, BRAKE HOSES

Number Designation Model 453
BA42.10-P-1004-04SR Retaining screw, brake line to hydraulic unit Nm 14
ELECTRONIC STABILITY PROGRAM (ESP®)

Number Designation Model 453
BA42.45-P-1001-01P Nut, hydraulic unit bracket to body Nm 21
ELECTRONIC STABILITY PROGRAM (ESP®)

Number Designation Model 453
BA42.45-P-1002-01P Nut, bracket to hydraulic unit Nm 8
Fig 1: Identifying Brake Pedal Jack (000 589 18 31 00)
G11128830Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Adapter For Brake Pedal Winch (211 589 00 31 00)
G11128831Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Record Plug (129 589 00 91 00)
G11971934Courtesy of MERCEDES-BENZ USA